I was mistaken the issue is still there, it is most easily reproduced if you run youtube.com using Firefox on the external display moving the mouse over videos displays the window with garbage quite easily.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1918466 Title: Garbage window on external 4k display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1918466/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
